28840040

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{7433}}^1$

素因数の和:7541

約数の個数: 32

約数和(自身を含む): 65567880

約数和(自身を除く): 36727840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 7433, 14866, 29732, 37165, 59464, 74330, 148660, 297320, 721001, 1442002, 2884004, 3605005, 5768008, 7210010, 14420020, 28840040]

約数ペア:

[(1, 28840040), (2, 14420020), (4, 7210010), (5, 5768008), (8, 3605005), (10, 2884004), (20, 1442002), (40, 721001), (97, 297320), (194, 148660), (388, 74330), (485, 59464), (776, 37165), (970, 29732), (1940, 14866), (3880, 7433)]